I won't be using it until they re-implement at least bookmarks, private tabs, tab stacking and the custom event listeners for extensions. May even wait until they sort out other things like selecting text thats part of a link or double clicking the to right of tabs opens a new one instead of just un-maximising the window.

How do you manually update this thing? It does not have Chrome's autoupdate (checked the Task Scheduler, etc.), nothing. No option on the settings as well or maybe I'm just missing it.

It automatically updates itself, no user intervention needed. I haven't been to able to find any options regarding updating like the ability to turn off auto-update, but it happens automatically though.

Opera Next is still very much a preview release. They have many major features not implemented, although I must say that Opera is doing a so-so job in informing this. The first time I saw their forthcoming return of a Linux version was for example in a blog post comment reply...